from machine import Pin
from utime import sleep

led4 = Pin(14, Pin.OUT)
led3 = Pin(15, Pin.OUT)
led2 = Pin(16, Pin.OUT)
led1 = Pin(17, Pin.OUT)

cont = 0

def dibujar(numeros):
    if numeros[0] == "1":
        led1.on()
    else:
        led1.off()

    if numeros[1] == "1":
        led2.on()
    else:
        led2.off()

    if numeros[2] == "1":
        led3.on()
    else:
        led3.off()

    if numeros[3] == "1":
        led4.on()
    else:
        led4.off()

while True:
    if cont > 15:
        cont = 0
    binario = str(bin(cont))
    binario = binario[2:len(binario)]

    while (len(binario) < 4):
        binario = "0" + binario
    print(binario, " ", cont)

    dibujar(binario)

    cont += 1
    sleep(.5)